A cubic AuBe5-type YbCu5 phase with trivalent Yb ion

被引：32
|
作者：
He, J [1 ]
Tsujii, N [1 ]
Nakanishi, M [1 ]
Yoshimura, K [1 ]
Kosuge, K [1 ]
机构：
[1] KYOTO UNIV,GRAD SCH SCI,DEPT CHEM,KYOTO 60601,JAPAN
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1996年 / 240卷 / 1-2期
关键词：
YbCu5; intermetallic; structure; susceptibility; valence state;
D O I：
10.1016/0925-8388(96)02884-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The cubic YbCu5 compound with the AuBe5-type structure was prepared for the first time under a pressure of 1.5 GPa and annealed at 650 degrees C. The previously reported hexagonal YbCu5 phase with the CaCu5-type structure was also confirmed to be stable under relatively lower pressure and at higher temperature. In contrast to the divalent non-magnetic state of Yb ion in the hexagonal phase, Yb ion in the cubic phase was found to be in the trivalent magnetic state. The cubic YbCu5 phase probably presents a reasonable conjunction for a family of isostructural YbCu(5-x)M(x) (M = In, Ag, etc.) compounds, both in crystallographic aspect and in physical properties.
引用
收藏
页码：261 / 265
页数：5
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